Hydraulic valve.



No. 845,063. PATBNTBD FEB. 26, 1907.

H. A. DBSPER.

HYDRAULIC VALVE.

APPLICATION FILED JAN.23. 1906.

2 SHEETS-SHEET l.

No. 845,063. PATENTED FEB. 26, 1907. H. A. DESPER.

HYDRAULIC VALVE.

APPLICATION FILED JAN. 23. 1906.

2 SHEETS-SHEET 2.

TIZI/Ergzar.

UNITED STATES PATENT oEEIoE.

Specification, ,ofV Lettersy Patent.

Patented Feb. 2e, 1997.

Application tiled January 23, 1906. Serial No. 297,440.`

-ing novel features of construction whereby shock or water-hammer at theclosing. of the valve is obviated or neutralized to a degree. that renders it non-injirious. p

My invention consists in mechanism embodying the construction of parts, combinations, and mode of operation explained in the following detailed description and illustrated infthe accompanying drawings, the particular subject-matter claimed being definitely stated in the summary.

In the drawings, Figure 1 represents a longitudinal central section of a hydraulic-valve mechanism embodying my invention as .adapted'forlarge valves. Fig. 2 represents a transverse section at line X X on Fig. 1

flooking toward the front end." Fig. 3 repre-l sents a transverse section at line Y Y looking rearward. Fig.. 4 is a fragmentary detail section across the valveseat. Fig. 5 represents a longitf dinal central section ofv my in-` vention as adapted'for smaller-sized valves, also showing a form of controlling connection whereby the action can/be regiv lated andV ,an attachment whereby the action can be controlled from a distant station. Fig. 6 is ahalf-sectionv view showing a modification in the form of the controlling-cock. Fig. 7 rep-l resents a half-section view of the valve and -valve-seat and showing a modification in the form of packing, and Fig. 8 is a transverse section at the position of line Z Z on Fig. 6. In the construction of my improved hydr'alic valve as shown-by the drawings the .part marked A represents a casing` o r shell of s; itable size and shape for forming the wa.

terway and containing the operating parts.

{Said casing is provided at its ends a and a v,with coupling hubs, flanges, or other wellknown means for connecting` it with the line 'offv ,seryic-pipe, water-main, fire-hydrant @stand-pipa.- or .other situation where used.

In vthe present instance this shell is made in three united sections securely joined together at d A'and d.

B indicates the main valve, and 'C a pressure-cylinder containing a piston D for moving said valve. The idea of moving a valve by a piston and waterressure thereon is old in the arts, and it wil therefore be linderstood that such idea, broadly, is not made the gist of my present invention.

Within the shell A there is arranged and roperly supported a rin member or circuar valve-seat F, prefera ly having a backwardly-projecting cylindrical lip 2 about its central opening. A ask'et or ring G, of leather or other suitab e packing material, is arranged against said valve-seat to' form the closure-face between it 'and the valve. Extending rearwardly from the valve-seat there is a supplementary seat I, presenting an internally-conoidal surface 3, disposed with its smaller diameter adjacent to the'ring-seat and increasing rearwardly and terminating with a short cylindric surface 4 at its rear edge. In large-sized apparatus this siipplementary seat I is best made as a separate piece, preferably secured within the `casing A, as indicated in Fig. l and Fig. 71; but in the smaller-sized apparati' s it may be formed integral or with the conoidal surface 3 directly 1 pon the interior ofthe casing, as'illustrated` in Figs. 5 and l6.

The valve B in accordance with my invention is closable in opposition to the flow and is formed with a ring-seating face 5, having a groove 6, that renders the seating portion comparatively narrow and affords space for receiving the lip. 2 of the valve-seat ring. Rearward from the ring-seating face 5 there is a conoidal follower-rim-or flange B3, the width of which is equal to about one-half the diameter of the valve-seat ring, more or. less, and projectin rearward in the main waterchamber, wit the exterior surface thereof conoidallydiverging from 'the ring-seating face and fitted to approximately countermatch the interior surface 3 of the supplementary valve-'seat I when the valve is closed and having a cylindrical peripheral portion 7 at its rear edge. The front of the valve may be of any suitable shape, but is preferably formed with a conical nose,- `as at 9, for defiecting the current' toward the periphery. The valve is provided with a concentric hollow stem or sleeve 10, that extends in to the cylinder C and has the piston D xed IOO y 25,v comprising outer and inner rings inteupon the end thereof. Said hollow stem is fitted to slide upona central stationary tubular guide-shaft 15, that extends from within the cylinder vto a position forwardv of the valve B, and has where its front end is open and preferably formed with a bell or enlarged funnel-shaped mouth 16 for concentrating the force of the current thereinto, while at its rear part ithas suitable openings 17, communicating with the interior of the cylinder C ai'. the back of the piston D. This tubular guide-shaft 15 is supported by having its rear end secured in the rear cylinder-head C.

If in any instance desired, it-may also be- 154 supported at its fore end byvspider-arms fixed thereon and reaching to a ring adjacent to the valve-seat, as indicated by dotted lines 19 on Fig. 1. The front end of thevalvestem is htted to enter acup ord'ash-pot groove 20, formed around the center tube 15, which parts are adapted for giving yielding resistance as the valve approaches its seat.

A cup-leather packing 23 is provided about the stem 10 where it.enters the cylinder, a suitable ring-flange being formed on lthe cylinder-head and threaded washer 22, fitted therein, for holding said cup-leather, as shown. n

The cylinder C is supported concentric within the casing A by a removable annulus gr'ally united by webs or arms 26 (see Fig. 2) and having waterway spaces 27 between them. The exterior of said annulus is made to fit a seating-surface on the interior of the shell A, and the interior of the annulus is fitted to a concentric seating-surface on the outside of the cylinder, so that the cylinder is maintained firm and central. AThe annulus and cylinder areconfined in place by the closing of the uniting-joint d of the shell. In small valvesA the arms or Webs 26 may be made integral with the cylinder, as shown in Fig. 8.

.The piston D is provided with a Arearwardly-flanged cup-leather packing 28, and

said piston is confined to `the valve-'stem` 10 by a nut 29. An expanding coiled spring 30' is arranged between the piston and rear cyl-v inder-head, the purpose vof which is to normally'press the parts to forward position when there is no backwater-pressure or when l the valve is not in useybut the'operation of the mechanism when in usenis not dependent uponthe spring, and said spring can in some instance's'be omitted, if sc desired. The direction in which'the water flows through the vmain waterway is indicated by arrows atthe center line. c

H indicates a three-way cock, preferably disposed Within the casing and having means,

as the stem 32 and hand-lever 33, for operating it from the exterior. Communicating lwith said cock'there is a passage34 from the interior of the cylinder forward of the piston,

1 a passage 35 vfrom the interior rear part of the cylinder, and a passage 36 to the exterior of the casing, or an outside discharge.

In large-sized hydraulic valves I provide a conicalointed screen on strainer 13, arranged m the bell or flaring mouth 16 of the tubular guide-shaft 15, as indicated in Fig. 1, for preventing fish, eels, or floating substances from' entering the cylinder.4 The conical form enables the surface to benwashed clear without causing an accumulation that would retard the'action or interfere with the flow i through the main valve.-

In Fig. 6 there is shown a modification in the form of the controlling-cock adapted for the smaller sizes of valves.

lip2 protects the edge ofthe packing-ring against the rushing force of the water passing through the opening when the valve is away from its seat. y The operation is as follows: When cock H is set as shown in Fig'. 1, the force of the head-Water acting through the tubular shaft 15 exertsy its ressure on the back of the piston D, which) friction of 'the parts, and as the pressure on the front of the piston is, the passage 34' and outlet which-is fixed to the valve-stem forces the C is equalized at bothsides of the piston, and

the head-pressure agai through the valve-seat channel and between 'the coned surfaces. The opening movement formed on the backof the valve, coming in H is turnedto itsprimary position, thereby matching rearwardly-enlarged cone-surfaces is made of sufficient area to? overcome the pressure on the valve and the In this the cock is made as a plug H with its axis disposed ra- IOC relieved through 36. The piston valveBhfirnxly to its seat, thereby cuttingl nst the valve B forces said valve rearward, opening the waterwayl` of the valve is arrested by the ribs or fins 21,

contact with' the packing-seatrim or washer 23 at the front of the cylinder. ,When itis desined to close the valve, controlling-cock' relieving the pressure at the front of the piston, and the valve is closed, as 'first above.` explained. In the closing action thecounteri wherein the passage 34 is connected' a pipe:

of the supplementary seat I and apron B3- When thevalve is nearly closed-serve to `thin out the stream passing through, and as the areaat the rear part thereof is greater than the areav near -the valve-seat it tends to check 'the movement and-at the same timex to draw the valve toward the seat slowly and Without irregular movements, While at the safme time `the ring-seat groove 6 and valve-seat lip 2 'cause the Water to assume an S-sbhaped current thathecks the movement v"With a gradual resistance and prevents 'shocklof the valve against the packing-face. The straightuor cylindrical surfaces at 7 and 4serve to approximatelycut oi1 the :flow just bf'afore-the face of the .valve strikes the 'seat andso .throttliiigr the stream 'that the closingaction Iis `effected Without sudden shock, ,thereby obviating4 or. reducingv the Water-hammer effect lto a "degree that is nugatory or non-injurious to the system:

By arranging the controlling-cock H Withi in 'the shell it is protected from liability of d age in case thel valve rmechanism' isv erected inexposedpositions.

.In Fig. there is illustrated a modiication 37 .with the waterway in fron-t othe main valve B and an outlet-pipe 36a y a T or cross-fitting 38 exterior to the body-shellA. There is a separate stop-cock- H2-arranged inthe pipe 37 and a'stop-'cock H3 in the outl let-pipel 3 6". vThese two stop-cocks are operated theone H2 for letting thev Water,- pressure fromthe mainiinto ,the front chamber of the cylinder-C and the onezHal for relieving the pressure in 'said front chamber.4 Inthis instancerthe-passa e 35 is, omitted. With the two cocks, H2 an- I-I3 thefs'peed at` Which the main'valve'B moves'fc'an'be .va-

. riously regulated or controlled byopening one of lsaid cocks more or lessinjproportion to the opening of the otherg-or, again, by opening cock H2 suicient to' allovv a'fshort mvement of the piston andl then closing it ithelvalve can beheld partiallyv open. Theren is falso sho-Wn in Fig.` 5 means for(':ontrollingI 'the valve from" afdista'nt station. This consists'ofv a pipe 39, connecting the-cylinder- .passage 34 with the source I"of Watersupply lat a point S any desired or convenient dis-,

tance from the hydraulic 'valve and having the'three-way cock Hl and outletb arrange'd at the station rom'ivhich control is desired to be effected. Manipulation of the cock H. changes" the pressure and direction of iioW 1n pipe 39 'and effectsmovements of" the piston for openinglor closing the v'alve `b equahzing or relieving the pressure in ,the ont chamber of the cylinder, as herein'before explained.

I claim'- 1.` yA hydraulic-valve mechanism, comprising` the body-casin avalve-seat therein, van openstationary tui vforth.

ular guide-shaft, a valve I.

having a hollow stem slidabl'e on said guideshaft; in combination with the pressure-cylinder fixed within the casing and containing the endof said guide-shaft, thepistonfwithin said cylinder secured -to the end of the holfrom the ring-seating, face. and projecting into the main Water-chamber as 'an internally-'open flange approximately countermatching the surface-bf the .valve-seat 'ex-Y itension; said conoidal member of the valve adapted to approximately close. upon the conoidal extension-surfacej with'. the closing of-its ring-seating face, for the purpose set 3. In a hydraulic-valve mechanism of the class described, the combination ofavalve having a ring-face with a rearwardly-flaring conical flange or follower-rim, and a valveseat having a ring-face and a. rearwardlyenlarged supplementary extensiomthe conical counter-matching surfaces arranged to close upon each o ther approximately simultaneous'with the closure of'the ringfaces., said conical -langeportions each` terminating 4Within the mainwa-ter-chamber With a short.-

lstraight cylindrical-portion at their rear edge, for the purpose s et forth.

" 4. In. a hydraulic-valve mechanism of the class described, tlie combination with the body-casingof avalve-seat ring, .a supplementary rearwardly-'enlarged seating member' having f' an' v internally-coned surface, a -valve having a ring-seating face and a rear- Wardl-enlarged Afollower-rim With an externall cned' surface, and-means for ica-l5lr moving said valve.

' 5. Ina h draulic-valve mechanism of the class described,- in combination yWith the valve-seat ring having a rearwardly-pro- `jecting lip, the :packing-ring and rearwardlyenlargedextension 'With internal-,coned surroo automat- 'i face; a valve having a ring-seatifaceproj and a rearwardly-'extended conoidal run,

and means for automatically operating said valve. v

- 6. ,In a. hydraulic-valve mechanism, in combination, With a suitable casing', a valve, a ressure-cylinder'and a fistonvvithin said cy inder for operating sai valve, of a tubu- .lar valve-supporting' guide through which vWater-pressure is admitted from lthe;,viiatqgn- `Way in ront of the valve to thejgntrler efpsaid cylinder.

4vided with a groove for receiving said lip,

7. In a hydraulic-valve mechanism, the combination of the casing having a Water- Waytherethrough, and means for'its attachment to a service main or pipe, -a valve-seat 5 and a pressure-cylinder fixed Within said casing, a tubular valve-supporting guide open at `its front and leading into the cylinder, a valve-movable on said tubular guide and having a ring-face closable against the iovvalve-seat, a piston movable Within the cylinder and attached to the. valve-stem, passages for the inlet and discharge of Water intoV valve, and means substantially suchas de-I scribed for controlling the pressure Within the cylinder-chambers. f `J 9. In a hydraulic-valve mechanism, the o combination substantially as described, of

" "the casing, the valve-seat ring, the cylinder supported stationary Within the casing, a, central tubular guide-shaft connecting With L said cylinder and open at the front of the valve, a valve c losable on said valve-seat in opposition to the flow and having a hollow stem slidably mounted on said guide-shaft, 'a piston fixed on saidstem Within the cylinder, Water-passages from the chambers of 4o said cylinder, -agthree-Way cock controlling said passage, and means external of the. shell for turning said cock.

10. Inra4 hydraulic-valve mechanism, the lp combination With the main casing, the cylin- 45 der, the central tubular guide-.shaft lead-ing theremto', the 'valve having a hollow stem slidable .on said guide-shaft,A and a piston .attached to said valve-stem Withinothe cylinder, of a ring-flange on the cylinder-head,

5'0 fand a cup-leather held therein and surrounding sind l valve-stern, vsubstantially vas set forth. 1

In a hydraulic-valve.,mechanism, in

I combination with the main casing, the pres- I sure -cylinder, valve-operating "piston and 1 valve having the hollov'sr stem; the central tubular guide-shaft communicating with the interior of the cylinder and having the open ll enlarged mouth forward of the valve, for the 1 purpose set forth.

class described, the tubular guide-shafthavi ing the annular dash-pot groove, and the valve having the hollow stem s'lidableon saidguide-shaft, said hollow stem being exin combination with the casing inclos'ing the Waterway, the valve-seat, and means for closing `said valve. 1-

13. In ahydraulic-valve mechanism of the class described, the removable annulus-com- `or Webs and having Waterway-s aces between, in combination With the cylinder having an external seat for thev inner ring, the divided shell having 'a seat for the outer ring, the central guide-shaft, the valve sliding thereon, the lpiston lconnected with the valve-stem, and the concentric valve-seat, substantially-as set forth. f

14. In a ydraul'c-valve mechanism ofthe .the valve, the cylinder, valve-actuating piston, and tubular valve-supporting shaft having the bell-mouth land passage leading into the cylinder; of a pointed conical strainer fitting overthe mouth ofsaid tubular shaft, substantially as andv lfor the purpose' set forth.

15.'In a hydraulic-valve mechanism, in combination with the casing or shell including 'a Watervviay and valve-seat, the valve, tubular valve-Supporting guide-,shaft,'valve actuatingpistcn 'and cylinder, of the exanding coiled ,)fs'p\ng disposed Within the ing tension for forcing the valve toward itsseat.

Witness my 'hand this 15th day of J anuary, 190,O

HENRY A. DESPER. Witnesses: j V A CHAs. H'BURLEIGH, ELLA P. BLENUs.

12. In a hydraulic-valve mechanism ofthe prising outer and inner rings united by arms tended at the front of the valve and fitted. for resistingly entering said dash-pot groove,

character described, the combination With cylinder at theback of the piston and exert- IOC 

